When you first open up Steemit.com, before you have created an account, you remain at the url https://steemit.com/ and are left on the Trending page. The Page Title is set to Trending Posts — Steemit.
When you return to Steemit while logged in, you are redirected to a url of the form https://steemit.com/@{username}/feed and the Page Title is set to Home — Steemit
But, if you view the same URL while logged out, or view the feed of any other user, the Page Title stays the same. I discussed this a little bit earlier today.
This would be a relatively easy thing to implement, since the Page Title is already being changed dynamically.
Home — Steemit@{username}'s feed — Steemit